A technician needs to replace a swollen battery in a laptop. The original battery is marked as 11.4V and 48Wh. Which of the following replacement batteries is the safest and most appropriate choice for the technician to install?
A battery rated at 15.2V and 48Wh
A battery rated at 7.6V and 48Wh
Any battery that physically fits in the laptop's battery compartment
The correct choice is the battery rated at 11.4V and 52Wh. It is critical to match the voltage of the replacement battery to the original battery's specification (11.4V) to prevent damage to the laptop's internal circuitry or create a safety hazard. Using a battery with a different voltage, whether higher or lower, can lead to system instability or permanent damage. While the capacity (Wh or mAh) can be the same or slightly higher for longer runtime, the voltage must match. Physical fit is necessary, but it does not guarantee electrical compatibility.
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